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Official data from INPI

AMORTECEDOR HIDRAULICO

ConcedidaInvention Patent

Application data

Number

PI7901973

Type

Invention Patent

Filing

04/01/1978

Publication

-

Progress at the INPI

  1. Filing04/01/78
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant01/11/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 01/11/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TOKICO LTD

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Inventors

K. T. (pessoa física)

M. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/11/1983

RPI 638

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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